Method of attaching a collar to the end of a pipe.



P. H. GRIMM.

METHOD OP ATTACHING A COLLAR T0 THE END OF A PIPE.

APPLICATION FILED APRA?, 1911.

Patented Oct. 1, 1912.

2 SHEETS-SHEET 1.

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P. H. GRIMM.

METHOD 0F ATTACHING A COLLAR T0 THE END 0F A PIPE.v

APPLICATION FILED Amm, 1911.

1,039,930, Patented Oct. 1, 1912.

2 SHEETS-SHEET 2.

16 Qmd'ncmm f1/V14 m,

"has

shaded section 15, of Fig. 4.. After the The advantages' of this methodof formi'- inga flange or collar on the end of the pipe, are that whentwo such lianged pipe ends are placed together in practice, thebore ofthe pipe is uniform and no water pockets are formed at the joints, as inthe case of many prior made y my invention makes a perfectly homogeneousunion between the end of the pipe, t-he inside diameter. of the collarand the new metal or Swedish iron which has been added, and in no senselare the metals united by the molten Swedish iron acting similar to asolder, but rather by molecular union of the three metals composing theSwedish iron pipe and collar by inter-fusion. Q This perfect union ofthe metals is made possible by my method, for the reason that thewelding surfaces are constantly in sight and; it can be seen whetherthey are perfectly, clean and free from substances which wouldvinterfere with the securing of a strong weld, i -thereby avoiding alluse` of a linx, and at the same time seeing that the metals and parts Ithas also been found that by my method a flange can be secured to a pipesix inches in length,

have actually been fused together.

while in the prior couplings and'methods of which I am aware, eighteeninches of pipeare required. Furthermore, by the method herein describedthe welded or connecting surfaces are square, thereby effecting a maXi-'mum resistance to the pipe and flange beingV separated. It has also beenfound that by.

the 'useof afheating torch-10, which previously brings the end of thepipeto a redV heat, before the 'Oxy-acetylene blow pipe is applied, thecost of fastening a flange to a pipe section vis reduced to a minimumfor the reason that the oxygen and acetylene used in an Oxy-acetyleneburner are expened to tightly draw up the abutting flanges 4,

secured to the ends of the pipe sections by my process.

In attaching collars to the ends of pipes, it must be considered thatboth ends of the pipe to be treated will have a collar attached. Thesecollars after they are welded on, must be practically parallel with eachother before j they are faced. After facing, they must be exactlyparallel. It follows, therefore, that pipe couplings. The finished weld1 i I i Il the ends 'of the pipe itself must be made parallel before thecollar isvplaced on the pipe. In practice I find that iron or steelpipes as they come from the mill are never axially straight and hencetheir ends are not parallel with each other. To weld collars on pipes inthis condition would result in the co lars beingso much out ofparallelism that when the collars are finally faced off, they would notbe of the same thickness onv their periphery. Hence, I prepare the pipeto receive the collars by placing it in a lathe.

which vhas two revolving cutter heads, and face olf both ends at thesame time. The pipe itself during the facing operation remainsstationary. When the recesses 5 of the collars are now slipped over theends of the pipe andagainst the slight shoulders, the take a positionwhich make the collars at the ends of the pipe, practically parallel,

regardless of the curvature of the pipe,

should there be any. After the collars are welded on in this position,the pipe with its collars is again placed in the lathe and faced oft',both ends at the same time. This results not only in exactparallelism,but also in exact length, both of which are of the greatest importancein high grade work for heavy vsteam pressures.

What I claim is 1. The method of making a lianged pipe by uniting acollar to the end of a pipe, which comprises supporting the collar onthe edge of the end of the pipe by means of a small lip on said collarso that the inner periphery of said collar rests on and projects fromthe end of the pipe, melting and fusing the metal at the contiguous endof the pipe and inner periphery ofthe collar and adding metal in a fusedstate during the said melting and fusing of the end of the pipe andinner periphery of the collar.

2. The method of making a pipe having a flanged end, which comprisessupporting a collar on the edge of the end of the pipe by means of asmall lip on said collar so that the inner periphery of said collarrests on and projects from the end of the pipe, melting and fusing themetal at the contiguous end of the pipe and inner periphery of thecollar and adding metal in a fused state during the said melting andfusing of the end of the pipe and inner periphery of the collarsufficient to fill up the an lar pocket between the end of the pipe andinner periphery of the collar.

3. AThe method of making a pipe having a flanged end, which comprisessupporting a collar on the edge of 'the end of the pipe by means of asmall lip. on said collar so that the inner periphery of said collarrests on and projects from the end of the pipe, heating the end of thepipe and collar to a red heat bv a torch, melting and fusing the metalat the contiguous end of the pipe and inner periphery of the collar byvmeans'of Oxy-acetylene blow pipe and adding metal in a fused stateduring the said melting and fusing of the end of the pipe and innerperiphery of the collar suiieient to till up the angular pocket betweenthe end of the pipe and inner periphery of the collar.

4; The method ofmaking a ianged pipe by uniting a collar to the end of apipe, which comprises supporting the collar in a substantially verticalposition onthe edge 'of the end of the pipe supported in a horizontalposition so that the inner periphery of said collar rests on andprojects from the end of the pipe, slowly rotating said pipe and collar,melting and fusing the metal at the lowest section of the contiguous endof the pipe and inner periphery of the collar during the rotation ofsaid pipe and collar, and adding metal in a fused state during the saidmelting, fusing and rotation of the end of the pipe and inner peripheryof the Collar.

5. The method of making a flanged pipe by uniting a collar to the end ofa pipe, which comprises supporting the collar in a substantiallyvertical position on the edge of the end of the pipe supported in ahorizontal position so that the inner periphery of `said collar rests onand projects from the end of the pipe, slowly rotating said pipe andcollar, melting and fusing the metal at the lowest section of thecontiguous end of the pipe and inner periphery of the collar during therotation of said pipe and collar and adding metal in a fused stateduring the said melting, fusing and rotation of the end of the pipe andinner periphery of the co1- lar sufficient to lill up the angular pocketbetween the end of the pipe and inner periphery of tbe collar.

In testimony whereof I aHiX my signature in presence of two witnesses.

PAUL H. GRIMM.

Witnesses:

JAMES J. PHELAN, MORRIS SALTPE'I'ER.

